Today at Mobile World Congress 2009 in Barcelona, Nokia’s “Dean of Devices” Kai Öistämö announced the Nokia E55, their slimmest QWERTY (SureType) device yet. It will be available in Europe this summer for roughly $340 USD. Amongst the details currently announced is an incredibly impressive one month stand-by time.

So far we know that the slim smartphone is rocking a 2.4-inch QVGA screen, WiFi b/g, EGPRS, Bluetooth 2.0, 3.2 MP camera and a 3.5 mm headphone jack. Oh, and that in month standby time we were stoked about is really 28 days on a GSM network. It apparently drops to 19 days on WCDMA.